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A plate of protected Antarctic toothfish and controversial dish foie gras were on the table at a lavish taxpayer-funded dinner hosted by Trade Minister Tim Groser.

Mr Groser and two officials ordered the toothfish - a species which New Zealand is going to huge lengths to protect - at a Singapore restaurant in January, ministerial credit card receipts released by the Department of Internal Affairs show.

The receipt says Mr Groser spent $300 on the meal at Table for 7, which included $35 on the Chilean Sea Bass - also known as Patagonian or Antarctic toothfish. The minister ordered foie gras for $26, two pan-seared duck dishes for $35 each, and a $90 bottle of Central Otago pinot noir.

Mr Groser was in the country for Trans-Pacific Partnership (TPP) talks, and the meal was declared as a "delegation dinner hosted by the Minister".